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Mag Help

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Brian '35F12

04-30-1999 16:07:14




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I just mounted my mag back onto my F12 and followed the service manual for setting it up and installing. I then put a plug on the no.1 plug wire and tried crank'n her (none of the plugs are installed) I set the no.1 plug against the block but I couldn't get a spark. I remember when I cleaned the mag I was turning it by hand a zapped myself but nothing too stunning if you know what I mean. Should I send it out for a re-work, or how else can I check for good spark out of her. I've been working on this tractor for almost a year and am soo close to getting her ready to start up again that I hate leaving the garage even more than normal. Thanks in advance.

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MikeH(Tx)

04-30-1999 19:16:43




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 Re: Mag Help in reply to Brian '35F12, 04-30-1999 16:07:14  
First, with all the plugs out, crank her over and watch any of the spark plugs with their bases touching bare metal to see if they make a good spark. Assuming this shows a good spark, there is nothing wrong with your magneto. Now for timing. The rough way to time it is to put your finger over the number one spark plug hole and crank the engine until you feel maximum pressure. Then, carefully, extend your little finger into the spark plug hole and feel the piston reach top dead center. Without moving the crank, check to see that the magneto rotor is set to fire plug wire number one. If this looks ok, your tractor should work. You can then follow the correct instructions from the manual to time it exactly whenever you feel the urge.

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Jack Morrison

10-06-2002 17:18:07




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 Re: Re: Mag Help in reply to MikeH(Tx), 04-30-1999 19:16:43  
I have a Mccormick Farmall B that has problems in the magneto No Fire; and sugestions will be appreciated:
Also where is the timeing mark, if any??



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Jack Morrison

10-06-2002 17:26:49




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 Re: Re: Re: Mag Help in reply to Jack Morrison, 10-06-2002 17:18:07  

Need Information on the magneto for a Farmall B
No fire when it is cranked. also need the best way to time the tractor and where is the timming mark located? If any.



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